【声明】本文参考自极客学院视频
1、复制文本文件
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; public class FileReaderWriter { public static void main(String[] args) { try { FileReader fr=new FileReader("java.txt"); BufferedReader br=new BufferedReader(fr); FileWriter fw=new FileWriter("java_new.txt"); BufferedWriter bw=new BufferedWriter(fw); String line; while ((line=br.readLine())!=null) { bw.write(line+"\n"); } bw.flush();//缓冲器数据强制输出 bw.close(); fw.close(); br.close(); fr.close(); System.out.println("done"); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }